Vehicle navigation unit



FIG. 1 is a perspective view of a vehicle navigation unit, showing our new, original and ornamental design;

FIG. 2 is front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view thereof showing lid at upper front portion is open; and,

FIG. 9 is a perspective view thereof showing small lid at lower left front portion is open. 

The ornamental design for a vehicle navigation unit, as shown and described. 